MTL - After the Rebirth, the Male God Have Seen Me - Chapter 19

An average man is reincarnated in the world of DxD! How do you survive in a world of battle-hungry monsters? With a cheat skill, of course! Devour the competition, becoming stronger with every fight! From the depths of the Familiar Forest, the Beast King will rise. (Harem, Gamer!SI)

Mu Jingzhe transmigrates into a book filled with sweet, doting love to become the useless supporting character who serves as a foil to the female lead. She also becomes the stepmom of five kids to her recently deceased husband.

When she agrees to help her friend out in a blind date, she never imagined it would lead her to the one man she'd hoped never to encounter again—her child's father.Her first instinct? Run. But life has other plans, and she finds herself inescapably drawn back into his orbit as his company's legal advisor.Just as she's poised to resign, escaping the tangled web of personal and professional ties, she's cornered in his office by the man who is as relentless in business as he is in pursuit of her heart.In a game of cat and mouse, she is faced with a choice: succumb to the undeniable chemistry that still sizzles between them or risk it all to maintain the distance she's fought so hard to keep.

Qin Chuan arrived in a parallel world and got bound to a system.